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Article: An Electromyographic Investigation of the First Six Months of Progressive Mandibular Advancement of the Herbst Appliance in Adolescents

TitleAn Electromyographic Investigation of the First Six Months of Progressive Mandibular Advancement of the Herbst Appliance in Adolescents
Authors
Issue Date2001
PublisherE H Angle Education and Research Foundation, Inc. The Journal's web site is located at http://www.angle.org/
Citation
Angle Orthodontist, 2001, v. 71 n. 3, p. 177-184 How to Cite?
AbstractThe effects of the progressive activation of the Herbst appliance on the activity of the masseter and temporalis elevator muscles of the mandible were monitored in a group of 14 consecutively treated 10-15-year-old subjects with an Angle Class II, division I malocclusion. A cast silver splint Herbst appliance was activated in multiple stages at a rate of 2 mm/2 mo. The functionality of the superficial masseter and anterior portion of the temporalis muscles was monitored at maximum bite force using surface electromyography (EMG). The EMG recordings were taken at an incisal edge-to-edge position and a retruded mandibular position, both at a vertical interincisal separation of 3 mm using an acrylic bite plate. Measurements of maximum voluntary isometric clenches were taken during adaptive functional changes at pretreatment (baseline) and during the first 6 months of Herbst appliance therapy. Results showed great individual and inter- and intrasessional differences in electromyographic activity of the muscles before and during treatment. At the retruded position, the masseteric activity increased by the sixth month while temporalis activity remained at the same level. Following treatment, the masseteric imbalance was reduced, but the temporalis imbalance was unchanged. At the edge-to-edge position, masseteric activity increased by the sixth month, while temporalis activity remained unchanged. The masseteric imbalance was reduced by the sixth month, while the temporalis imbalance was reduced from the fourth month into treatment. The results imply a favorable muscular response to a progressive regime of Herbst appliance activation.
Persistent Identifierhttp://hdl.handle.net/10722/117852
ISSN
2015 Impact Factor: 1.579
2015 SCImago Journal Rankings: 1.254
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLeung, DKen_HK
dc.contributor.authorHägg, Uen_HK
dc.date.accessioned2010-09-26T07:36:57Z-
dc.date.available2010-09-26T07:36:57Z-
dc.date.issued2001en_HK
dc.identifier.citationAngle Orthodontist, 2001, v. 71 n. 3, p. 177-184en_HK
dc.identifier.issn0003-3219en_HK
dc.identifier.urihttp://hdl.handle.net/10722/117852-
dc.description.abstractThe effects of the progressive activation of the Herbst appliance on the activity of the masseter and temporalis elevator muscles of the mandible were monitored in a group of 14 consecutively treated 10-15-year-old subjects with an Angle Class II, division I malocclusion. A cast silver splint Herbst appliance was activated in multiple stages at a rate of 2 mm/2 mo. The functionality of the superficial masseter and anterior portion of the temporalis muscles was monitored at maximum bite force using surface electromyography (EMG). The EMG recordings were taken at an incisal edge-to-edge position and a retruded mandibular position, both at a vertical interincisal separation of 3 mm using an acrylic bite plate. Measurements of maximum voluntary isometric clenches were taken during adaptive functional changes at pretreatment (baseline) and during the first 6 months of Herbst appliance therapy. Results showed great individual and inter- and intrasessional differences in electromyographic activity of the muscles before and during treatment. At the retruded position, the masseteric activity increased by the sixth month while temporalis activity remained at the same level. Following treatment, the masseteric imbalance was reduced, but the temporalis imbalance was unchanged. At the edge-to-edge position, masseteric activity increased by the sixth month, while temporalis activity remained unchanged. The masseteric imbalance was reduced by the sixth month, while the temporalis imbalance was reduced from the fourth month into treatment. The results imply a favorable muscular response to a progressive regime of Herbst appliance activation.en_HK
dc.languageengen_HK
dc.publisherE H Angle Education and Research Foundation, Inc. The Journal's web site is located at http://www.angle.org/en_HK
dc.relation.ispartofAngle Orthodontisten_HK
dc.subject.meshAdolescenten_HK
dc.subject.meshAnalysis of Varianceen_HK
dc.subject.meshBite Forceen_HK
dc.subject.meshCephalometryen_HK
dc.subject.meshChilden_HK
dc.subject.meshElectromyographyen_HK
dc.subject.meshFemaleen_HK
dc.subject.meshHumansen_HK
dc.subject.meshIsometric Contractionen_HK
dc.subject.meshJaw Relation Recorden_HK
dc.subject.meshMaleen_HK
dc.subject.meshMalocclusion, Angle Class II - therapyen_HK
dc.subject.meshMandibular Advancement - instrumentationen_HK
dc.subject.meshMasseter Muscle - physiologyen_HK
dc.subject.meshOrthodontic Appliances, Functionalen_HK
dc.subject.meshOrthodontics, Corrective - instrumentationen_HK
dc.subject.meshOutcome Assessment (Health Care) - methodsen_HK
dc.subject.meshReproducibility of Resultsen_HK
dc.subject.meshTemporal Muscle - physiologyen_HK
dc.titleAn Electromyographic Investigation of the First Six Months of Progressive Mandibular Advancement of the Herbst Appliance in Adolescentsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0003-3219&volume=71 No.3&spage=177&epage=184&date=2001&atitle=An+Electromyographic+Investigation+of+the+First+Six+Months+of+Progressive+Mandibular+Advancement+of+the+Herbst+Appliance+in+Adolescentsen_HK
dc.identifier.emailHägg, U:euohagg@hkusua.hku.hken_HK
dc.identifier.authorityHägg, U=rp00020en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.pmid11407769-
dc.identifier.scopuseid_2-s2.0-0035377447en_HK
dc.identifier.hkuros63624en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0035377447&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume71en_HK
dc.identifier.issue3en_HK
dc.identifier.spage177en_HK
dc.identifier.epage184en_HK
dc.identifier.isiWOS:000169200900007-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLeung, DK=7203002814en_HK
dc.identifier.scopusauthoridHägg, U=7006790279en_HK

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